Struct VariantsCollector

pub struct VariantsCollector;

Utility struct with common collectors for VariantsHelper

Implementations

impl VariantsCollector

pub fn empty<V, F>(_v: &V, _f: FieldsHelper<'_, F>) -> TokenStream

where V: VariantInfo<F>, F: FieldInfo,

Empty collector

pub fn variant_definition<V, F>( v: &V, fields: FieldsHelper<'_, F>, ) -> TokenStream

where V: VariantInfo<F>, F: FieldInfo,

Variant definition collector

Examples

{
    Variant1,
    Variant2 = 5,
    Variant3 {
        field_1: String,
        field_2: i32,
    },
}

pub fn variant_fields_collector<V, F>( ty: impl ToTokens, ) -> impl Fn(&V, FieldsHelper<'_, F>) -> TokenStream

where V: VariantInfo<F>, F: FieldInfo,

Collects the fields of a variant

Examples

An unit variant:

Ty::Variant1

A variant with unnamed fields:

Ty::Variant2 (v_0, v_1)

A variant with named fields:

Ty::Variant3 {
    field_1: field_1,
    field_2: field_2,
}